740261 has 4 divisors (see below), whose sum is σ = 747552. Its totient is φ = 732972.

The previous prime is 740237. The next prime is 740279. The reversal of 740261 is 162047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162047 = 131 ⋅1237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 740261.

It is not an unprimeable number, because it can be changed into a prime (740161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3491 + ... + 3696.

It is an arithmetic number, because the mean of its divisors is an integer number (186888).

2⁷⁴⁰²⁶¹ is an apocalyptic number.

It is an amenable number.

740261 is a deficient number, since it is larger than the sum of its proper divisors (7291).

740261 is a wasteful number, since it uses less digits than its factorization.

740261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 740261 is about 860.3842164987. The cubic root of 740261 is about 90.4610497506.

It can be divided in two parts, 740 and 261, that added together give a palindrome (1001).

The spelling of 740261 in words is "seven hundred forty thousand, two hundred sixty-one".